Lift the golf cart's bench seat to gain access to the engine.
Locate the governor on the engine. This is the small "T"-shaped metallic rod around the top of the golf cart's motor.
Look for the carburetor in the engine. The carburetor is the cylindrical shaped object in the engine that has valves pointing up and out of the motor.
Pull on the governor closer to the carburetor. If the governor is moving with no resistance, then it is bad and needs to be replaced. If the governor cannot be moved, it is also bad and needs to be replaced.